In kratos mutators stack correct? as in the first one runs, and returns some data, that I can use in the next one? For context, I think what I’m going to try and do, is use the hydrator mutator + the id_token mutators so that it’ll go: username / pass -> kratos katos — (session token) --> oath keeper session token -> hydrator hydrator service returns a user id based on the session token then I use that user_id in id_token cc: @User

you mean oathkeeper mutators right?

Yes

hm not 💯 sure, but I would expect them to be